Spirula is a genus of deep-water, squid-like cephalopod mollusk containing a single living species, Spirula spirula. It is the only extant member of the genus, the family Spirulidae and the order Spirulida. Because of the shape of its internal shell, it is commonly known as the ram's horn squid or the little post horn squid, and because the live animal has a light-emitting organ, it is also sometimes known as the tail-light squid.
Facts
Taxonomic Rank Member Count Band Era First Appeared Classification
Living or Extinct Sources
1. Wikidata (taxon extant/extinct status)
Wikimedia Foundation / Wikidata contributorsQ17302116, descriptionView the Source 2. Spirula (Wikipedia)
Introduction
Spirula spirula is a species of deep-water squid-like cephalopod mollusk.
- Taxonomic rank (structure-wave classification, ruling 761/926)
View the Source3. Catalogue of Life (ChecklistBank): Taxon metrics for Spirula
Catalogue of Life (ChecklistBank)Taxon metrics, speciesExtantCountQuote, Taxon metrics, speciesExtantCount
"speciesExtantCount": 1
4. Paleobiology Database: Taxon record for Spirula
Paleobiology DatabaseTaxon record, first appearance (firstapp_max_ma, early_interval)Quote, Taxon record, first appearance (firstapp_max_ma, early_interval)
"taxon_name": "Spirula" ... "firstapp_max_ma": 0.774 ... "early_interval": "Chibanian"
Wikidata: Ram's Horn Squid
WikidataWikidata Q1509955, class allow-list match (w-wdresolver-0926)View the Source Reader Challenges (0)
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